本文着重介绍可吸入粒子多级采样器在采样流量为２升／分的情况下，对可吸入性粒径粒子的收集效率曲线能较好符合国际放射防护委员会（ＩＣＲＰ）等机构所提出的肺区可吸入粒子标准曲线。研究表明外界风速与采样气流入口朝向位置对收集效率有一定影响，这为进一步探讨气溶胶采样技术与采样头结构设计提供了一定实验数据与理论依据。 This article highlights the multistage sampler of inhalable particles at a sampling rate of 2 liters per minute and the collection efficiency curve for particles of inhalable size that fits well with the lungs proposed by the International Commission on Radiological Protection (ICRP) Zone inhalable particle standard curve. The research shows that the external wind speed and the orientation of the inlet of the sampling airflow have an impact on the collection efficiency, which provides some experimental data and theoretical basis for further exploration of the aerosol sampling technology and the sampling head structure design.